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Finding the Fourth Proportional to 62,196.88, 93,309.90 and 20,643.88

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Solution

The fourth proportional to 62,196.88, 93,309.90 and 20,643.88 is: 30,970.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,196.88 : 93,309.90 = 20,643.88 : x
  2. Step 2: Convert to fraction form
    62,196.88/93,309.90 = 20,643.88/x
  3. Step 3: Cross multiply
    62,196.88x = 93,309.90 × 20,643.88
  4. Step 4: Simplify right side
    62,196.88x = 1,926,278,378.41
  5. Step 5: Solve for x
    x = 1,926,278,378.41/62,196.88
  6. Step 6: Final answer
    x = 30,970.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.